公开(公告)号：AU7370200A

公开(公告)日：2001-04-17

申请号：AU7370200

申请日：2000-09-12

Applicant: KEMET ELECTRONICS CORP

Inventor： MOORE KEITH L ,  MELODY BRIAN J ,  KINARD JOHN T ,  WHEELER DAVID A

IPC: B22F5/00 ,  B22F1/00 ,  B22F3/02 ,  H01G9/00 ,  H01G9/052

Abstract: Metal powders are pressed into compacts more readily through the addition of a minor percentage of dimethyl sulfone binder. Dimethyl sulfone may be dry-blended with the metal powder by mixing it in the form of a powder, or it may be wet-blended by first dissolving it in a suitable solvent, then adding it to the metal powder and evaporating the solvent. Dimethyl sulfone may be almost completely removed from compacts pressed from tantalum, etc., either by vacuum distillation or by water leaching, to leave compacts uncontaminated by the binder and suitable for further processing into capacitor anodes, etc.

公开(公告)号：GB2421118A

公开(公告)日：2006-06-14

申请号：GB0600329

申请日：2004-06-08

Applicant: KEMET ELECTRONICS CORP

Inventor： KINARD JOHN TONY ,  MELODY BRIAN J ,  WHEELER DAVID A

IPC: H01G9/035 ,  H01G9/00

Abstract: An electrolyte for a capacitor and capacitor containing the electrolyte. The electrolyte has up to about 85 %, by weight, water, up to about 65 %, by weight organic solvent and an acid defined by HOOC-(CH2)x-COOH wherein x is 3, 5, 7 or 9, and ammonium hydroxide.

公开(公告)号：GB2418433A

公开(公告)日：2006-03-29

申请号：GB0600327

申请日：2004-06-07

Applicant: KEMET ELECTRONICS CORP

Inventor： MELODY BRIAN J ,  KINARD JOHN TONY ,  WHEELER DAVID A

IPC: C25D11/08 ,  C25D11/06 ,  C25D11/26 ,  H01G9/00

Abstract: An electrolyte solution for anodizing a metal and a capacitor comprising the anodized metal. The electrolyte comprises more than about 5%, by weight, and less than about 30%, by weight, water, about 0.1 to 20%, by weight, ionogen and an aprotic polar solvent. The ionogen comprises phosphoric acid and an alkanol amine in an amount, and ratio, sufficient to maintain a pH of about 4 to about 9.

公开(公告)号：GB2371056B

公开(公告)日：2003-02-26

申请号：GB0210166

申请日：2000-09-25

Applicant: KEMET ELECTRONICS CORP

Inventor： MELODY BRIAN J ,  KINARD JOHN T ,  MOORE KEITH L ,  WHEELER DAVID A

IPC: B22F3/02 ,  B22F3/10 ,  B22F5/00 ,  H01G9/052

Abstract: Organic acid-based binders are efficiently removed from powder metallurgy compacts, such as tantalum capacitor anode bodies, by immersion in a heated aqueous alkanolamine solution followed by rinsing in warm water. This method results in lower residual carbon and oxygen levels than are found with thermal binder removal methods.

公开(公告)号：GB2363681A

公开(公告)日：2002-01-02

申请号：GB0126532

申请日：2000-05-18

Applicant: KEMET ELECTRONICS CORP

Inventor： WHEELER DAVID A ,  LESSNER PHILIP M

IPC: H01G9/028 ,  C25D11/08 ,  H01G20060101 ,  H01G9/00 ,  H01G9/025 ,  H01G9/04 ,  H01G9/052 ,  H01G9/08

Abstract: Capacitor elements made with a solid polymeric electrolyte show reduced leakage current when reformed at about 60-85% of formation voltage during the impregnation phase between successive layers of polymeric electrolyte.